Modular teaching is a widely used and recognized teaching technique where learning is organized into self-contained units that allow students to learn at their own pace. It focuses on clearly defined objectives, utilizes a variety of media, and encourages active student participation. Modules can be administered to individual students, small groups, or large groups, and assessments are based on mastery of objectives rather than test scores alone. Overall, modular teaching is considered a more effective approach for mature learners.